Was unable to find variable

Author: hansthen

.github/workflows/test_code.yml

@@ -55,5 +55,5 @@ jobs:
       if: always()
       uses: actions/upload-artifact@v4
       with:
-        name: coverage-test-code-${{ matrix.os }}-${{ matrix.python_version }}
+        name: coverage-test-code-${{ matrix.os }}-${{ matrix.python-version }}
         path: .coverage*